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      1 // Copyright 2016 PDFium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
      6 
      7 #include "core/fxge/win32/cpsoutput.h"
      8 
      9 #include <algorithm>
     10 
     11 #include "core/fxcrt/fx_system.h"
     12 
     13 CPSOutput::CPSOutput(HDC hDC) {
     14   m_hDC = hDC;
     15 }
     16 
     17 CPSOutput::~CPSOutput() {}
     18 
     19 void CPSOutput::Release() {
     20   delete this;
     21 }
     22 
     23 void CPSOutput::OutputPS(const FX_CHAR* str, int len) {
     24   if (len < 0)
     25     len = static_cast<int>(FXSYS_strlen(str));
     26 
     27   int sent_len = 0;
     28   while (len > 0) {
     29     FX_CHAR buffer[1026];
     30     int send_len = std::min(len, 1024);
     31     *(reinterpret_cast<uint16_t*>(buffer)) = send_len;
     32     FXSYS_memcpy(buffer + 2, str + sent_len, send_len);
     33 
     34     // TODO(thestig/rbpotter): Do PASSTHROUGH for non-Chromium usage.
     35     // ExtEscape(m_hDC, PASSTHROUGH, send_len + 2, buffer, 0, nullptr);
     36     ::GdiComment(m_hDC, send_len + 2, reinterpret_cast<const BYTE*>(buffer));
     37     sent_len += send_len;
     38     len -= send_len;
     39   }
     40 }
     41